गूफ़

In the opening sequence, a group of young boys is playing at the Eiffel Tower when they pick up a dead pigeon. (A gunshot is heard but this is not explained.) The boys take the pigeon home (presumably walking) which is near Sacre-Coeur in the Montemartre neighborhood. This is a distance of 5.5 kilometers or 3.4 miles. It's highly unlikely that 10 year old boys would play so far from home.

It might seem unlikely in the 21st century, but in the mid-20th century even kids in the United States would be away from their homes for hours on end and roam for miles around.

When Dr. Bernhardt is being shown smoking a cigarette in the reflection of a passing train, the image is the opposite of how it should appear in a reflection.

Nighttime scenes were shot during daylight hours using a filter to darken the scene. But the sky is light when it should be dark/black. Further, detail in distant objects is distinct where as such detail would in reality fade into the shadows of the dark.

When Lindley spots Perrot strangling Bernhardt, he does so by looking at their reflection straight out across of Lucienne's cabin. But Perrot and Bernhardt were in the next cabin, so in order for Lindley to have seen this reflection he would have had to have seen the reflection at an angle, NOT straight out and across. By looking straight out and across, Lindley would have seen Lucienne's and his reflection.

Around the time of the incident in Sulzbach, that is supposed to take place when the train is in Germany, the train is running on the left side. It shows that the shooting was done in France, where trains run on the left side, but not in Germany, where they run on the right side.

The narration for the final scene says the train arrived at Wannsee, in the far west of Berlin, but the scene shows them driving from the east, down Unter Den Linden and into West Berlin. The British and American then ask passing jeeps for lifts to their respective bases which they would have driven past on the way from Wannsee, whilst the Russian turns around and drives back under the Brandenburg Gate into East Berlin.